var elID;
var http = createRequestObject();

function createRequestObject() {
	var objAjax;
	var browser = navigator.appName;
	if(browser == "Microsoft Internet Explorer"){
		objAjax = new ActiveXObject("Microsoft.XMLHTTP");
	}else{
		objAjax = new XMLHttpRequest();
	}
	return objAjax;
}

function loadFile(elementID, url){
elID = elementID;
http.open('get',url);
http.onreadystatechange = updateNewContent;
http.send(null);
return false;
}

function updateNewContent(){
if(http.readyState == 4){
document.getElementById(elID).innerHTML = http.responseText;
}
}